terminal.app version 0.9.4+cvs20051125-6build2 failed to build in oneiric

terminal.app version 0.9.4+cvs20051125-6build2 failed to build in oneiric
Link to failed build: https://launchpad.net/ubuntu/+source/terminal.app/0.9.4+cvs20051125-6build2/+build/2620171

Details about the rebuild:
http://people.ubuntuwire.org/~wgrant/rebuild-ftbfs-test/test-rebuild-20110816-oneiric.html

Direct link to the build log: https://launchpad.net/ubuntu/+source/terminal.app/0.9.4+cvs20051125-6build2/+build/2620171/+files/buildlog_ubuntu-oneiric-amd64.terminal.app_0.9.4%2Bcvs20051125-6build2_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 956 lines into the build log:

 Compiling file TerminalParser_LinuxPrefs.m ...
 Compiling file PreferencesWindowController.m ...
 Compiling file autokeyviewchain.m ...
 Compiling file Label.m ...
 Linking app Terminal ...
./obj/Terminal.obj/TerminalView.m.o: In function `-[TerminalView(input) runProgram:withArguments:inDirectory:initialInput:arg0:]':
/build/buildd/terminal.app-0.9.4+cvs20051125/TerminalView.m:1742: undefined reference to `forkpty'
collect2: ld returned 1 exit status
make[4]: *** [Terminal.app/./Terminal] Error 1
make[3]: *** [internal-app-run-compile-submake] Error 2
make[2]: *** [Terminal.all.app.variables] Error 2
make[1]: *** [internal-all] Error 2
make[1]: Leaving directory `/build/buildd/terminal.app-0.9.4+cvs20051125'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110711-1123
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/terminal.app-0.9.4+cvs20051125